Door controlling device



April 27, 1937. s. c. CHRIST! 2,078,833

' DOOR CbNTRQLLING DEVICE Filed Feb. 28, 1955 2 Sheets-Sheet 1 April 27,1937. s. c. C HRISTY DOOR CONTROLLING DEVICE Filed Feb. 28, 1935 2sheets-sheet 2 frevwezar Patented Apr. 27, 1937 unrrso stares ParentorFicE 2,078,838 noon. oon'rriopmnor DEVICE George C. Qhristy, Chicago,Ill. Application February 28, 1935, Serial No. 8,627

2 Claims. .(Cl. 292-53) 1 inoperative the holding device that holds thedoor in any given position.

The invention has as a further object to provide adoor controllingdevice'for Conn-011mg m orally movable doors.

The invention has as a further object toproviole a door controllingdevice which is mounted on the door and forms a part thereof.

The invention has as a further object to provide a door controllingdevice particularly adapted for the sliding doors of cars. f

The invention has as a further object to pro vide a door controllingdevice for a laterallymovable door or" a car which automaticallyprevents 5 the lateral movement of the door'in either direction due tomovement or stopping of the car.

The invention has other objects which are more particularly pointed outin the accompanying description.

Referring, now tothe drawings, Fig. l is a View of one form of doorcontrolling device embodying the invention; I I

Fig. 2 is an enlarged view of the bottom partof the door showing theposition of the parts when 5 the handle is moved in the direction of.the arrow to move the door; 1

Fig. 3 is a View similar to Fig. 2 showing the handle in the centralposition and the door locked against movement;

Fig. 5 is a sectional view taken on line 5-5' of Fig. 3 with the upperpart of the door in section added thereto; 5 Fig. 6 is a view similar toFig. 2 showing a modified construction of door controlling device;

Fig. 7 is a sectional view taken on line l! of Fig. 6.

Like numerals refer to like parts throughout the several figures.

Referring now to the drawings wherein for purposes of illustration Ihaveshown the door controlling device in connection with a laterallymovable car door, it is of course evident that it Fig. 4 is a sectionalviewtake on of ally movable car door. At the bottom of the door arerollers 2 and 3 which engage a track 4, the door rolling along thistrack. One of the difficulties of such a door is that when the car givesa sudden move, the door will move, and also when the car'is suddenlystopped. This often causes the door, if it should be unlocked, to moveback and forth and be battered at the ends of its travel and injured bysuch battering. This movement is something that it is exceedinglydesirable to prevent.

In the construction shown in Figs. 1, 2, 3, 4, and 5 the controllingdevice is attached to the door and forms a part thereof. In its simpleform the device consists of a plate 5 which is attached to the door inany desired manner, 'as

by the fastening devices 5. Mounted in proxim- A ity to this plate andpreferably mounted thereon are the control members I and 8, preferablypivotally connected in position. In Figures 1 to 5 I have shown twoseparate controlling members I and 8 pivoted at 9 and ill to a suitablefixed part on the door, which may be the plate 5. These controllingmembers are provided with engaging ends I I and I2 which engage a fixedpart 4 associated withthe device with which the door is used. A handlegrasped by anyone on the ground, and this handle is arranged so thatwhen pressure is applied to it to move the door, it will release thecontrolling device which holds the door against this movement.

"Any suitable connection between the handle and the controlling membersmay be utilized. In the particular construction shown, the plate 5is'pr'ovided with a slot l5 through which the handle I l projects.Connected with this handle on the inside of the plate is a piece [6which covers the slot when the handle is in any of its variouspositions. There is alsov connected with the handle M an actuating parti! which moves one of the control members to its inoperative positionwhenthe handle is moved in one direction, and which moves the othercontrolling member to an inoperative position when the handle is movedin the opposite direction. In the construction shown this isaccomplished by the actuating part ll being located between the controlmembers, as clearly shown in Fig. 4. The control members are enclosedbetween the plate 5 and the part l8, which may be the door itself orsome part associated therewith so that the control mechanism It issuitably located to be Cir is inaccessible and hidden from view. At thetop of the door there are usually provided guides la which engagestationary parts lb on the car, a portion of the guides la projectingunder the part lb.

In Figs. 6 and 7 I have shown a modified construction wherein the twocontrol members la and 8a are mounted upon the same pivot 8b. The otherparts are similar to the construction shown in Figs. 1 to 5 inclusive.

While in Figures 1 to 5 inclusive I have shown the device applied to ametal door, I have in Figures 6 and 7 shown the device applied to a wooddoor. In this construction there is an opening cut in the bottom of thedoor and the plate l9 to which the control members are connected by thepivot 8b, is fastened to the outside of the door by the fasteningdevices 20. There is a rear plate 2! and the control members la and 8aare between the plates l9 and 2 I. The pivot 8b preferably passesthrough both of the plates. The control members are preferably cut awayat their upper ends so as to overlap, as clearly shown in Fig. 7. Theengaging ends 22 and 23 engage the part 24 of the device with which thedoor is used. The handle 25 passes through the slot 26 in the plate l9and has an engaging part 21 which projects between the control membersla and 8a. There is a closure 28 for the slot 26.

I have described in detail certain particular constructions embodyingthe invention, but it is of course evident that the parts may be changedin form, construction and arrangement, and some of the parts omitted andothers used which are not herein shown, without departing from thespirit of the invention as embodied in the claims hereto appended, and Itherefore do not limit myself to the particular construction shown.

The use and operation of my invention are as follows:

The door I in Fig. 1 is shown down on the rollers 2. When the handle ofthe car is free, that is, is released, it stands intermediate thecontrol members, and these control members are in the position shown inFig. 3, wherein the engaging ends ll and l2 engage the part 4 and thedoor is lifted off of the rollers so that it cannot be accidentallymoved in either direction. I prefer to have the parts la and lb sorelated so that when the door is thus lifted off the rollers, the partof the guide la under the part lb engages said part lb, or the top edgesof the door may engage a fixed opposed part, so as to assist in holdingthe door against movement.

When it is desired to move the door, the handle M is grasped. If thehandle is moved in the direction of the arrow, that is to the right inFig. 2, the actuating part l'l engages the control member l and movesits lower end ll outwardly and upwardly so as to release it fromengagement with the part ll. The door can now be moved to the right, asthis movement causes the lower end of the control member l2 to moveoutwardly and upwardly so as to release the door, the door then comingdown upon its rollers and being easily moved to any desired position. Ifthe door is to be moved in the opposite direction, the handle I4 ismoved in the opposite direction, moving the end l2 of the member 8outwardly and upwardly, freeing the door so that it may be easily moved.When the handle is released, the lower ends of the control members arein engagement with the opposed part 4. Under these conditions a slightmovement of the door in either direction causes the lower end of one ofthe control members, depending upon which way the door is moved, to bemoved inwardly to securely engage the part 4 and lift the door from therollers and hold it against any accidental movement. When the handle I4is grasped and moved in either direction, it releases the control memberto which it applies pressure and permits the door to be moved so as torelease the other control member and the door rests on the rollers andcan be moved to the point desired.

The operation of the device in Figures 6 and 7 is similar in everyrespect to that above set out.

It will therefore be seen that I'have here a simple, inexpensive controldevice which prevents accidental movement of the door in eitherdirection, but which permits its easy movement in either direction whenthe handle is grasped.

It will further be noted that the same handle which is used to move thedoor, also acts to ref lease the control members. This device,therefore, does not require the operator to do anything different fromwhat he does with the ordinary door, for he grasps the handle just likehe grasps the handle of the ordinary door and applies pressure to it,and this releases the control members and causes the door to move to thedesired position. When he releases the handle, the control members actto raise the door and prevent accidental movement in either direction.

I claim:

1. A door controlling device comprising a movable handle for moving thedoor to open and close it, a lifting mechanism with which said handle isassociated connected with said door for lifting and supporting the doorwhen pressure is applied to the door at a point separate from the handlewhen the handle is released, said handle having a controlling engagementwith said lifting device, the movement of the handle, for the purpose ofopening or closing the door, rendering said lifting mechanisminoperative, said handle being separate from said lifting mechanism.

2. A door controlling device comprising a door lifting mechanismconnected with the door for lifting and supporting the door whenpressure is applied to the door at a point separate from the handle, ahandle for moving the door to open and close it, and an operativeconnection between said handle and the door lifting mechanism forrendering said lifting mechanism inoperative when pressure is applied tothe handle to move the door.

GEORGE C CHRISTY.

